Ammonium polyphosphate
(phase-II)

Molecular formula: (NH4PO3) n n>1000
CAS No.: 68333-79-9
EINECS No.: 269-789-9

HS CODE: 28353990

Model No.: TF-FR201

Ammonium polyphosphate (Phase II) is a non-halogen flame retardant. It acts as flame retardant by intumescence mechanism. When APP-II is exposed to fire or heat, it decomposes to polymeric phosphate acid and ammonia. The polyphosphoric acid reacts with hydroxyl groups to form a nonstable phosphateester. Following dehydration of the phosphateester, a carbon foam is built up on the surface and acts as an insulation layer.
Specification:

Specification	Value
	TF-FR201
Appearance	White powder
P2O5 (w/w)	≥71%
N Content (w/w)	≥14%
Decomposition Temperature (TGA, onset)	＞275℃
Solubility (g/100ml water , at 25ºC)	＜0.5
pH value ( 10% aqueous suspension )	6.5-8.5
Viscosity (10% aqueous suspension, at25℃)	＜100
Moisture (w/w)	＜0.25%
Average Particle size	10µm

Applications:

1. Used to prepare many kinds of high-efficiency intumescent coating, the flameproof treatment for multistory building, ships, trains, cables, etc.
2. Used as the main flameproof additive for expanding-type flame retardant used in plastic, resin, rubber, etc.
3. Make into powder extinguishing agent to be used in large-area outfire for forest, oil field and coal field, etc.

4. In plastics (PP, PVC, PE, etc.), Polyester, Rubber, and Expandable fireproof coatings.

Packing: 25kg plastic woven bag with PE liner. 20mt/20’fcl without pallets, 18mt/20’fcl with pallets. Other packing as request.

Storage: in dry and cool place, keeping out of moisture and sunshine, shelf life two years.